Questions tagged [shift]
Questions related to the usage of the right and/or left shift key on the keyboard. For questions regarding bitwise shift operations use [bit-shift]
shift
1,061
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Getting the nearest value of a column with time shift in python
I have a dataframe with a datetime (with milisseconds) as index and a price column. I want to create a new column with the nearest price from the row 20s earlier. For example:
Data Hora
2024-02-01 10:...
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3
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54
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Python Pandas: update last dates values of parameters with simple dynamics grouped by id
Here's a dataframe, with some parameters for each id by some regular quarterly dates. It's originally shuffled randomly, but, at first, let say, it is sorted by fab_date and id.
import pandas as pd
np....
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2
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2
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48
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Pandas window-like function to rid off time-stamp overlapping
I have a dataframe that contains promo campaign duration and I need to rid off time-stamp overlapping.
import pandas as pd
import numpy as np
from pandas import Timestamp
t1 = np.array([['Store A', ...
0
votes
0
answers
19
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Catching Android Keyevent for Shift as keycode or metaState from USB Barcode Scanner in HID mode
I have a Android 11 Zebra device with a Barcode Scanner in HID mode.
The keyevents are send to the app and I see the pressed keys. Unfortunately I have a problem when uppercase letters are used.
Then ...
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1
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65
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python pandas Problem repeating the previous value
is my code
import pandas as pd
columns1 = ['Student ID', 'Course ID', 'Marks']
data1 = [(1, 10, 100), (2, 400, 200), (3, 30, 300), (3, 30, 300), (3, 30, 300), (3, 30, 300), (3, 30, 300), (3, 30, 300)]...
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1
answer
22
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ComputeError with polars dataframe while trying to pass a column expressions in a simple shift() operation
Sorry, I'm starting out in Polars. Is there a way to achieve the same functionality of the shift(n) function where n is a dataframe variable.
When I try:
df = pl.DataFrame({
"a": [1, 2, ...
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0
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2
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67
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The underline type for uint_fast8_t may be wider than a single byte, so the uint_fast8_t b = 0xF0; b<<4; isn't determined across different compilers?
uint_fast8_t is intended to provide the fastest possible 8-bit (or wider) integer type on the target platform, while uint8_t is a fixed 8-bit unsigned integer type.
So the uint_fast8_t b = 0xF0; b<...
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103
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Bits and bytes shifts C++
I have a rather interesting task. I need to perform a bit shift with a cutout of the bits. That is, I have a binary .bin file. The first 16 bytes must be skipped, the byte numbering starts from 0, ...
2
votes
1
answer
79
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pushing filtered values to a second array
I'm working through an application to a coding bootcamp and am stuck. I could use some help seeing what I'm doing wrong. I'll post the question, the code and the output. Any help is greatly ...
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63
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TypeError when using whisper-node library for audio transcription in NestJS project
I'm encountering a TypeError while attempting to transcribe audio from a WAV file using the whisper-node library in my NestJS project. Here's my code snippet:
import whisper from 'whisper-node';
...
0
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2
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182
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How to implement a template class in c++?
I'm learning c++ at uni for a few months so I'm a beginner and in my exam I encountered a problem with template class. The task was to implement a template class in a header file like it was given in ...
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14
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Xcorr function in python for acceleration signal
I have two acceleration signals with different lengths, whose start and end times are not the same. I want to find the time difference between these two from the initial data and the end in seconds ...
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How can I use `df.shift(n)` in pandas dataframe such that I can bring `n` item from bottom to the top instead of `nan` values or vice versa? [duplicate]
I have a pandas dataframe df containing 5 rows and 2 columns.
A B
0 10 0
1 20 5
2 30 10
3 40 15
4 50 20
df.to_dict() returns
{'A': {0: 10, 1: 20, 2: 30, 3: 40, 4: 50},
'B': {0: 0, 1:...
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On keyup event, when shift + key released , shift before key , event.key not reflects key
In javascript ,onkeyup event, when I press shfit + key , then release the shift before the key, I don't get the event.key for the key , instead I get "shift".
Is there a way to get the event....
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Creating a sliding window with a shift using array with elements
Hi just having an issue here with respect to creating a sliding window with a shift over a numpy array with X number of elements.
weather_radiance_copy is a numpy array with 10 elements (although it ...
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